Author: Skorobogatov, D.N.
Paper Title Page
WEPPC032 The Power Supply System for the Accelerating Column of the 2 MeV Electron Cooler for COSY 512
 
  • D.N. Skorobogatov, M.I. Bryzgunov, A.D. Goncharov, I.A. Gusev, M.N. Kondaurov, V.R. Kozak, A.S. Medvedko, V.V. Parkhomchuk, D.N. Pureskin, A.A. Putmakov, V.B. Reva, D.V. Senkov
    BINP SB RAS, Novosibirsk, Russia
 
  The electron cooler of a 2 MEV for COSY storage ring FZJ is assembling in BINP. The high energy electron beam produced by the electrostatic accelerating column. The power supply for accelerating column of the electron cooling system consists of 33 distributed by the accelerating potential controlled modules. Each module has precision controlled voltage source 60 kV 1mA, and additional supply for the magnetic system solenoid with a maximal current of 2.5 amperes. All the system controlled through wireless ZIGBEE network. The report presents the structure of the power system, its parameters and the results of tests carried out in BINP.  
 
WEPPD028 Beam Position Monitor System for 2 MeV Electron Cooler for COSY 608
 
  • E.A. Bekhtenev, V.P. Cherepanov, G.V. Karpov, V.B. Reva, E. Shubin, D.N. Skorobogatov
    BINP SB RAS, Novosibirsk, Russia
 
  The 2 MEV electron cooler for COSY storage ring FZJ is assembling in BINP. Beam position monitor (BPM) system for orbit measurements has been developed and fabricated at BINP. The system contains 2 BPMs inside the cooling section and 10 BPMs in transport channels Continuous electron beam is modulated with a 3 MHz signal for capability to get signals from pickup electrodes. The beam current modulation can be varied in the range of 0.3-1.5 mA. The BPMs inside the cooling section can measure both electron and proton beams. It is achieved by means of switching the reference signals inside the BPM electronics. The BPM electronics provides highly precise beam position measurements. Relative position measurement error doesn’t exceed 1 micron. Design features of the BPM system, its parameters and testing results are presented in this paper.  
 
WEPPC028 High Voltage Terminal in COSY Electron Cooler 503
 
  • V.A. Chekavinskiy, E.A. Bekhtenev, I.A. Gusev, M.N. Kondaurov, V.R. Kozak, E.A. Kuper, V.R. Mamkin, A.S. Medvedko, D.N. Pureskin, D.V. Senkov, D.N. Skorobogatov
    BINP SB RAS, Novosibirsk, Russia
 
  In Budker INP SBRAS was developed electron cooler with energy up to 2MeV for COSY accelerator (Germany). Due to restricted footprint, cooler's collector and gun parts were combined in a single acceleration system – high voltage terminal. All power and control electronics were placed in a single isolated volume, filled with SF6 gas under 4-6 atm. pressure. Electronics is controlled via wireless CAN, and powered by multistage transformer, capable of 15 kW power at 26 kHz. Wireless control is passed through dedicated optically transparent window, also served for modulated laser beam, used in electron beam diagnostic. By construction, electronics is divided on two standalone units: collector power supply and gun-filter system (SGF). SGF is built on 19" EuroPak chassis, where were placed all power modules, needed for collector and gun pipe electrodes. All power outputs were protected against overvoltage and sparks, available while cooler exploitation. In SGF there were controlled up to 40 parameters altogether. SGF inner power supply provides stable operation in wide range of input voltage, up to ±50% from nominal. Also included in SGF are 2 auxiliary systems, used for beam guiding and beam diagnostics.